GB9743-2024

Passenger car tyres

轿车轮胎

GB 9743-2024 é uma norma nacional chinesa obrigatória vigente: Passenger car tyres. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de mai. de 2025.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to new passenger car pneumatic tyres. It covers requirements, judgment principles, and marking for tyres used in passenger vehicles. It is mandatory for all manufacturers producing tyres for the Chinese market. The standard does not apply to used or retreaded tyres.

Requisitos técnicos

The standard specifies comprehensive technical requirements for passenger car tyres. Key areas include tyre main parameters such as size, load index, and measuring rim specifications. It defines limits for new tyre outer dimensions and establishes the correspondence between speed symbols and maximum speed, as well as load index and load capacity. Safety performance requirements are detailed, including tyre strength, bead unseating resistance, endurance, low-pressure performance, and high-speed performance. Manufacturers must ensure tyres meet minimum safety thresholds to prevent failures. Newly added requirements include rolling resistance performance and wet grip relative performance, aligning with international fuel efficiency and safety trends. These apply to radial tyres excluding certain special types. The standard also mandates tread wear indicators with a minimum height of 1.6mm and sets criteria for appearance quality to prevent severe defects.

Métodos de ensaio

Testing methods are based on referenced standards including GB/T521 for outer dimension measurement, GB/T4502 for safety performance (strength, bead unseating, endurance, high-speed), GB/T29040 for rolling resistance, and GB/T21910 for wet grip. Results must be rounded according to GB/T8170. Visual inspection is used for appearance quality.

Perguntas frequentes

What products are regulated under GB 9743-2024?

It regulates new passenger car pneumatic tyres, including radial and bias tyres, but excludes certain special purpose and racing tyres from some specific performance requirements like rolling resistance.

What are the key updates in GB 9743-2024 compared to the 2015 version?

The 2024 version adds requirements for rolling resistance and wet grip performance, updates the scope of safety performance tests, and introduces new marking requirements for special purpose tyres and run-flat tyres.

When does GB 9743-2024 come into effect?

The standard was issued on April 29, 2024, and implements on May 1, 2025. However, the requirements for rolling resistance and wet grip have a 12-month transition period from the implementation date.

The summary above provides a high-level overview of GB 9743-2024. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 9743-2024 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: G41
ICS: 83.160.10
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: National Technical Committee on Tyres and Rims of Standardization Administration of China

Relações

Substitui:GB 9743-2015